OSPF Network Types

Network TypeDB/BDRHello Type
Unicast/Multicast
Hello/Dead/Wait
Intervals
Point-to-PointNOMulticast10/40/40
Point-to-MultipointNOMulticast30/120/120
Point-to-Multipoint Non-broadcastNOUnicast30/120/120
BroadcastYESMulticast10/40/40
Non-BroadcastYESUnicast30/120/120

Point-to-Point

R6(config-subif)#do show ip ospf int e0/1.146

Ethernet0/1.146 is up, line protocol is up 
  Internet Address 155.1.146.6/24, Area 0, Attached via Interface Enable
  Process ID 1, Router ID 150.1.6.6, Network Type POINT_TO_POINT, Cost: 10
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           10        no          no            Base
  Enabled by interface config, including secondary ip addresses
  Transmit Delay is 1 sec, State POINT_TO_POINT
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

Point-to-multipoint

Ethernet0/1.146 is up, line protocol is up 

  Internet Address 155.1.146.6/24, Area 0, Attached via Interface Enable
  Process ID 1, Router ID 150.1.6.6, Network Type POINT_TO_MULTIPOINT, Cost: 10
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           10        no          no            Base
  Enabled by interface config, including secondary ip addresses
  Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT
  Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5

Point-to-multipoint non-broadcast

Ethernet0/1.146 is up, line protocol is up 

  Internet Address 155.1.146.6/24, Area 0, Attached via Interface Enable
  Process ID 1, Router ID 150.1.6.6, Network Type POINT_TO_MULTIPOINT, Cost: 10
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           10        no          no            Base
  Enabled by interface config, including secondary ip addresses
  Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT
  Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5

Broadcast

Ethernet0/1.146 is up, line protocol is up 

  Internet Address 155.1.146.6/24, Area 0, Attached via Interface Enable
  Process ID 1, Router ID 150.1.6.6, Network Type BROADCAST, Cost: 10
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           10        no          no            Base
  Enabled by interface config, including secondary ip addresses
  Transmit Delay is 1 sec, State WAITING, Priority 1
  No designated router on this network
  No backup designated router on this network
  Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

Non-broadcast

Ethernet0/1.146 is up, line protocol is up 

  Internet Address 155.1.146.6/24, Area 0, Attached via Interface Enable
  Process ID 1, Router ID 150.1.6.6, Network Type NON_BROADCAST, Cost: 10
  Topology-MTID    Cost    Disabled    Shutdown      Topology Name
        0           10        no          no            Base
  Enabled by interface config, including secondary ip addresses
  Transmit Delay is 1 sec, State WAITING, Priority 1
  No designated router on this network
  No backup designated router on this network
  Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5

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